well if those work fine then I don't think the conversion of the signal is happening properly.
Maybe you have to tell the LCD what kind of signal you are sending it? Analog or Digital?? Try pretting the Auto button on it. Or look...
The service manual doesn't tell you how to open the laptop in great detail, just says remove the bezel and these screws. That's it.
It's easier than you think. The button bezel is usually is attached to the hinge covers, pop those free...
I haven't worked with the newer display formats but usually you have to boot up with it already plugged in. I assume you already know this but there is a Fn+F5 -maybe? key combination you have to do to enable the port. The key that...
on your screenshot it looks like it doesn't even sense there is anything plugged into it. I think you have some signal<->conversion problems. Maybe it's not possible?
You need to determine if it's the DC jack in the back or something fishy with the laptop itself. Wiggle the wire around in the jack and see if it will make a connection. Or just stick something small in the jack and see if it's loose...
anything with a Sempron is going to suck anyway. You would only be able to upgrade it to a slightly faster Sempron, which isn't going to help it. The lack of cache size is what makes them suck. Same with goes with the Intel Celeron...